Fingers Crossed for 2021 ...

2020 was the worst! COVID kept the museum closed for much of the year and a mains water pipe bursting causing a flood kept us closed for the rest. 
We're hoping to re-open in the next few months ... fingers crossed! Read More >>>

Please Donate Via Just GivingNo visitors, no workshops, no events, no school visits... no income. We know that things are tough for everyone right now, but if you can afford to help us through these tough times please donate what you can.

There's over 36,000 exhibits here! That should keep you occupied for a bit - get searching!

Or come and get involved on our social media channels ...

      Twitch  Facebook          Online Gift Shop      

Thank you.

 Home > LEO Computers > Lyons Electronic Office (LEO) Archive > CMLEO/LS - LEO Comput ... s Society Collection > Photographs > Photographs of LEO I > 61863 Empty LEO I rack (1953)

61863 Empty LEO I rack (1953)

Description of Photograph

Digital copy of a photograph of an unfilled rack on LEO I, with the engineering console in the background.

Caption: 'Rack, unfilled, was to be filled with equipment to interface the STC gas tube converters and reconverters, later abandoned. [ms] 28.1.53'

This image appears in the interactive plan for our Virtual LEO I installation, p74.

Research comments: The almost empty carcass shown in this photograph gives an insight into how the racks were constructed to house LEO I's thousands of valves. The engineer's console in the background changes considerably over time, as the pioneers establish what they need to be able to monitor while the calculator is running. Under the console an oscilloscope sits on the floor; these scopes were a vital piece of equipment for the engineers. (LM)

Digital copy made by John Daines, LEO Computers Society, of a photograph in the LEO Computers Collection (formerly part of the National Archive of Historic Computing) at the University of Manchester Library: NAHC/LEO/B1-34

Date: 28th January 1953

Physical Description: 1 digital image (jpeg); black & white; image includes original typed caption

Archives Hub References: CMLEO/LS/PH/1/61863

Related Topics:

Comment on This Photograph

This exhibit has a reference ID of CH61863. Please quote this reference ID in any communication with the Centre for Computing History.

Photograph of 61863  Empty LEO I rack  (1953)

Copyright Unknown

Help support the museum by buying from the museum shop

View all items

Founding Sponsors
redgate Google ARM Real VNC Microsoft Research
Heritage Lottery Funded
Heritage Lottery Fund
Accredited Museum